Head-mounted display device



FIG. 1 is a top perspective view of a head-mounted display deviceshowing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is bottom perspective view thereof; and,

FIG. 9 is top perspective view thereof, in which a head attachment meansand a front cover are provided in broken lines to illustrate an exampleenvironment.

The broken lines in the drawings represent environment and portions ofthe head-mounted display device that form no part of the claimed design.

CLAIM The ornamental design for a head-mounted display device, as shownand described.